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Beach sea / Cortex / Economy first / OBSERVED BUILD

Standard beach sea

Cortex Beach sea build order · Supreme Isthmus

The role's usual play: com goes to sea to build a shipyard around 2 minutes, pumping frigates and destroyers to contest enemy sea entry or hold vision, with an advanced metal extractor around 10 minutes as the transition into the team's…

Usually shipyard first (94%)

#naval #eco · 840 distinct matches · 110 players · 84% of Cortex Beach sea games · team won 55% of 911 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:57

  1. Open 3 mex and wind while com heads straight to sea.
  2. Drop Shipyard fast, before 2:00, to seize early sea presence.
  3. Push "frigate" out to contest enemy sea entry or hold vision.
  4. Add "destroyer" as the fleet grows.
  5. Transition into Advanced Metal Extractor to catch up on eco.

Phase by phase

TYPICAL OF ITS 840 GAMES
  1. 1
  2. 2
  3. 3
PLAY THE OPENING

Follow the example game's first 6:00 step by step: what to build now, what comes next, and where it goes. At 1× it keeps pace with your own game.

  1. 1

    Up to the Shipyard

    Economy
    • Metal Extractor3Mex
    • Wind Turbine3Windfor allies
    • Wind Turbine2Wind
    • Energy Storage1Energy storage
    Order
    1. ShipyardShipyard after 3 mex, 2 wind, 1 energy storagedone ~1:57, middle half 1:44–2:07

    By 1:40 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 3 steps
    1. Mex ×3
    2. Tidal
    3. ShipyardShipyarddone 1:17 · typical 1:57
  2. 2

    Shipyard to 5:00

    Economy
    • Metal Extractor5Mex
    • Tidal Generator2Tidal
    Builders
    • Construction Ship2 Con ship
    Army
    • Riptide2 Frigate
    • Herring1 Missile corvette
    • Oppressor1 Destroyer
    Other
    • Naval Radar / Sonar Tower1 Naval Radar / Sonar Tower

    Some games also: Urchin (44%) · wind (40%) · submarine (39%) · gunboat (36%) · con turret (35%)

    By 5:00 in all: 8 mex · 3 wind · 2 tidal · 1 energy storage

    The example game in this phase · 19 steps
    1. Tidal
    2. Construction ShipCon ship
    3. Tidal ×2
    4. Windfor unknown
    5. Construction ShipCon ship
    6. Wind ×2for unknown
    7. Mex
    8. HerringMissile corvette
    9. SupporterGunboat ×4
    10. Mex
    11. SupporterGunboat ×3
    12. Mex ×2
    13. HerringMissile corvette
    14. OppressorDestroyerdone 4:45 · typical 5:11
    15. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    16. GuardGuard
    17. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    18. Death CavalryDeath Cavalry
    19. Tidal
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine9Wind
    Builders
    • Death Cavalry1 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Urchin1 Urchin
    • Riptide5 Frigate
    • Oppressor2 Destroyer
    • Herring2 Missile corvette
    Other
    • Naval Radar / Sonar Tower1 Naval Radar / Sonar Tower

    Some games also: Naval Construction Turret (48%) · Guard (47%) · Radar Tower (40%) · tidal (39%) · con turret (34%)

    By 10:00 in all: 9 mex · 12 wind · 4 wind · 4 tidal · 1 energy storage · 1 Naval Construction Turret

    The example game in this phase · 100 steps
    1. Mex
    2. JellyfishJellyfish
    3. Naval Construction Turret
    4. Construction ShipCon ship
    5. Mex
    6. Construction ShipCon ship
    7. SupporterGunboat
    8. Wind
    9. Naval Energy Storage
    10. SupporterGunboat ×2
    11. Tidal
    12. Wind
    13. Tidal
    14. Construction ShipCon ship
    15. Tidal
    16. Wind
    17. Tidal
    18. Naval Metal Storage
    19. Tidal
    20. Naval Construction Turret
    21. Mex
    22. Con turret
    23. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    24. Tidal ×2
    25. Naval Construction Turret
    26. Naval Hovercraft PlatformNaval Hovercraft Platformdone 7:53
    27. Tidal
    28. Naval Construction Turret
    29. Naval Energy Converter
    30. UrchinUrchin
    31. GoonGoon
    32. Naval Energy Converter
    33. Advanced Metal ExtractorT2 mexdone 9:07 · typical 9:58
    34. GoonGoon
    35. Naval Energy Converter
    36. GoonGoon
    37. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    38. GoonGoon
    39. Naval Energy Converter
    40. GoonGoon
    41. Con turret
    42. Naval Energy Converter
    43. GoonGoon
    44. BirdeaterHover anti-air
    45. Naval Energy Converter
    46. MangonelHover rocket bot
    47. Tidal
    48. MangonelHover rocket bot
    49. Tidal
    50. Advanced Metal ExtractorT2 mex
    51. Tidal ×7
    52. Advanced Metal ExtractorT2 mex
    53. Tidal ×6
    54. Con turret ×2
    55. Naval Construction Turret
    56. Advanced ShipyardAdvanced Shipyarddone 11:02
    57. Advanced Metal ExtractorT2 mex
    58. GuardGuard
    59. Advanced Construction SubAdvanced Construction Sub
    60. Con turret
    61. GuardGuard
    62. PathfinderPathfinder
    63. Bot LabBot Labdone 11:50
    64. PathfinderPathfinder ×3
    65. Bot LabBot Labdone 12:02
    66. OasisOasis
    67. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 12:53
    68. PawnPawn ×21
    69. ShipyardShipyarddone 12:59
    70. PawnPawn ×8
    71. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    72. PawnPawn ×4
    73. Con turret
    74. SupporterGunboat ×3
    75. PawnPawn
    76. SupporterGunboat
    77. Con turret
    78. PawnPawn
    79. SupporterGunboat ×3
    80. PawnPawn ×2
    81. SupporterGunboat
    82. PawnPawn
    83. SupporterGunboat
    84. PawnPawn
    85. SupporterGunboat
    86. PawnPawn ×2
    87. SupporterGunboat
    88. PawnPawn
    89. SupporterGunboat
    90. PawnPawn ×8
    91. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    92. PawnPawn ×6
    93. Advanced Metal ExtractorT2 mex
    94. PawnPawn ×30
    95. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    96. PawnPawn ×2
    97. Mex
    98. PawnPawn ×2
    99. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    100. PawnPawn ×5

Counts are medians over the build's games: half of them build more, half fewer. The example game is EpicTyrannus's (43 OS, 02/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:52 · in 78% of games

You get

  • Finch1 Finch from Airfirst at 1:58 · in 82% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 62% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 68% of games
  • Construction Bot1 Con bot from Geofirst at 2:28 · in 69% of games
  • Hercules1 Light transport from Airfirst at 2:35 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:09 · in 88% of games

How it plays out

Typical game of this build, running totals by minute

Metal produced

010k20k30k
0:005:0010:0015:00

metal

Enemy metal destroyed

05k10k
0:005:0010:0015:00

metal

Own metal lost

02.5k5k7.5k
0:005:0010:0015:00

metal

911 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156900
4:0025342151
5:003708197100
6:005034535255
7:0064761081591
8:00806218211031
9:00967428201581
10:001157039342334
11:001378150203070
12:001631761193806
13:001909971094570
14:002189381835721
15:002490892026551
WHAT THE NUMBERS SAY

Standard Beach sea wins more than Geo sea's 50% and gets its Shipyard up faster, using early sea access before falling behind on land resources.

  • + Shipyard finishes by 1:57, faster than Geo sea's 3:18
  • + 54% team win rate beats the Cortex geo sea baseline
  • − Metal produced trails Geo sea's Cortex build, 24356 vs 28451 by 15:00
  • − T2 factory only lands in 35% of games by 12:42
THE EXAMPLE YOU ARE READING

EpicTyrannus

42.6 OS · 02/10/2026

Open source match ↗

7 received units · includes a constructor
542 metal received · 81073 energy received

Allied construction assistance is unknown. Timings are observations, not a promise of solo reproducibility.

Typical milestones

Shipyard1:57Middle 50%: 1:44–2:07 · n=909
Riptide3:51Middle 50%: 3:15–4:34 · n=894
Oppressor5:11Middle 50%: 4:17–6:08 · n=877
Advanced Metal Extractor9:58Middle 50%: 9:17–10:53 · n=770

Played most by

EpicTyrannus89games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildKbot_my_Ahole51games of this build